The suspects are thought to be members of the Greek branch of the neo-Nazi group Combat 18.

Far-right and far-left violence has increased in Greece during the country's deep financial crisis over the past eight years. A Nazi-inspired party, Golden Dawn, is currently Greece's fourth-largest in parliament.

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Authorities said Friday that the cables suspending a pedestrian bridge were being tightened after a "stress test" when the 950-ton concrete span collapsed over traffic, killing at least six people and injuring 10

Authorities said Friday that the cables suspending a pedestrian bridge were being tightened after a "stress test" when the 950-ton concrete span collapsed over traffic, killing at least six people and injuring 10

(Marvel Studios/Disney via AP, File). FILE - This file image released by Disney and Marvel Studios' shows Chadwick Boseman in a scene from "Black Panther." “Black Panther” has become the first film since 2000’s “Avatar” to top the weekend box office fi...

"Black Panther" has become the first film since 2000's "Avatar" to top the weekend box office five straight weekends.

"Black Panther" has become the first film since 2000's "Avatar" to top the weekend box office five straight weekends.

(AP Photo/Kiichiro Sato). In this Tuesday, March 13, 2018 photo, Chicago resident Sonja Russell walks up to a voting machine to cast her ballot in Illinois primary elections at the city's new early voting super site in downtown Chicago. In Illinois, at...

The attempted hacking of election systems in 21 states two years ago put the focus on the vulnerability of voter registration systems.

The attempted hacking of election systems in 21 states two years ago put the focus on the vulnerability of voter registration systems.

(Nick Wagner/Austin American-Statesman via AP). FBI agents meet at the scene of an explosion in Austin, Texas, Sunday, March 18, 2018. At least a few people were injured in another explosion in Texas' capital late Sunday, after three package bombs deto...

Police have warned residents near the site of the latest explosion in Austin to remain indoors and to call 911 if they need to leave home before 10 a.m.

Police have warned residents near the site of the latest explosion in Austin to remain indoors and to call 911 if they need to leave home before 10 a.m.

(Joe Ahlquist/The Rochester Post-Bulletin via AP). Emergency personnel respond to the scene of a fatal stabbing Saturday, March 17, 2018, at the Salvation Army Castleview Residence in downtown Rochester, Minn. Police have arrested a man in the multiple...

Police have arrested a man in the fatal stabbing of two men at a Salvation Army apartment building in downtown Rochester, Minnesota.

Police have arrested a man in the fatal stabbing of two men at a Salvation Army apartment building in downtown Rochester, Minnesota.